Support reflection tests on Android

compiler/testData/codegen/box/traits/noPrivateDelegation.kt

@@ -2,6 +2,8 @@
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS, NATIVE
 
+package test
+
 interface Z{
 
     private fun extension(): String {
@@ -14,7 +16,7 @@ object Z2 : Z {
 }
 
 fun box() : String {
-    val size = Class.forName("Z2").declaredMethods.size
+    val size = Class.forName("test.Z2").declaredMethods.size
     if (size != 0) return "fail: $size"
     return "OK"
 }